Ninefeldt Pool Reservoir Report

Last Updated: December 5, 2025

Ninefeldt Pool, located in Carlton County, Minnesota, is a privately-owned earth dam constructed in 1969 by the USDA NRCS.


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Summary

This dam, situated on the Moose Horn River West Branch, serves a primary purpose that falls under the category of "Other." With a height of 7 feet and a length of 430 feet, Ninefeldt Pool has a storage capacity of 132 acre-feet and a drainage area of 0.4 square miles.

Managed by the Minnesota Department of Natural Resources, Ninefeldt Pool is regulated, permitted, inspected, and enforced by state agencies to ensure its structural integrity and safety. The dam has a low hazard potential and is currently in satisfactory condition as assessed in September 2017. While the spillway type is uncontrolled, the risk assessment for Ninefeldt Pool is considered moderate. Overall, this dam plays a crucial role in water resource management in the area, contributing to flood control and water storage for various purposes.

With its strategic location and purposeful design, Ninefeldt Pool stands as a testament to effective water management practices in Minnesota. As a key structure in the region, it not only provides essential water storage but also underscores the importance of proper regulation and maintenance in safeguarding water resources and mitigating potential risks. For water resource and climate enthusiasts, Ninefeldt Pool serves as a fascinating example of how human intervention can positively impact the natural environment while ensuring the safety and well-being of surrounding communities.

Year Completed

1969

Dam Length

430

Dam Height

7

River Or Stream

MOOSE HORN RIVER W BRANCH

Primary Dam Type

Earth

Drainage Area

0.4

Nid Storage

132

Structural Height

9

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

9
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.